A star is a luminous spheroid of plasma held together by self-gravity. [1] The nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night; their immense distances from Earth …

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Jan 20, 2026 · A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, …

May 2, 2025 · A star’s gas provides its fuel, and its mass determines how rapidly it runs through its supply, with lower-mass stars burning longer, dimmer, and cooler than very massive stars.

May 8, 2025 · How does a star work? How do they form, live, and eventually die? Learn more about these distant objects and their major importance in the universe.

Sep 21, 2024 · As a star approaches the end of its lifespan, it no longer has hydrogen to transform into helium in its core. Unable to complete the nuclear fusion process, the star begins to succumb to …

These large, swelling stars are known as red giants. But there are different ways a star’s life can end, and its fate depends on how massive the star is.

The meaning of STAR is a natural luminous body visible in the sky especially at night. How to use star in a sentence.

Apr 11, 2025 · In a very broad sense, a star is simply one of those twinkling points of light you can see in the night sky. But that’s not terribly satisfying in either lexicological or physical terms.

Jan 4, 2021 · It's easy enough to say what a star is: one of those bright pointy things that twinkle in the night sky. But the actual definition of a star is as rich and colorful as the stars themselves.